Nobody flies 777s without having a lot of training and experience, and they work on all sorts of scenarios in the simulator in addition to logging a lot of flight hours. Whoever the pilots were yesterday, you can be certain they were experienced and qualified; of course they would know what to do when the plane hit the ground. As for the planes that landed before, were they also 777s flying similar routes? Perhaps there were technical issues and these in turn were not handled correctly by the pilots (see the example I gave above - American 587). It's really too soon to say what caused the accident, but I am sure the NTSB and everyone else involved in the investigation will do a thorough job. This is why I link to Ask The Pilot, who unlike me can explain what an auto landing involves based on actual experience Again, see above.